Can someone please help me ASAP?

Answer:

The wavelength of wave is 2.78 m.

Explanation:

Frequency of a wave is 90 Hz

Speed of a wave is 250 m/s

It is assume to find the wavelength of wave. The formula of speed is given by :

[tex]v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{250}{90}\\\\\lambda=2.78\ m[/tex]

So, the wavelength of wave is 2.78 m.

Answer:

a)Visibile light waves

Explanation:

Answer: A, B, G

Explanation:

Answer:

Force and Motion

Answer:

Acceleration

Explanation:

Any change in speed is change in velocity which is referred to as acceleration.

Answer:

Epsilon Eridani

Explanation:

This is in the main sequence as you can see there is an area called "main sequence all you have to do is read all the stars and to see which one is in there and that is The epsilon eridani

Option C is correct. A star in the main sequence will be Epsilon Eridani.

Epsilon Eridani is a star in the Eridanus constellation, located  south of the celestial equator. This makes it visible from the majority of the Earth's surface. 

A star is a heavenly body made up of a brilliant spheroid of plasma held together by gravity. The Sun is the closest star to Earth.

Many additional stars may be seen with the normal eye at night, but due to their great distance from Earth, they appear as stationary points of light in the sky.

A star in the main sequence will be Epsilon Eridani.

Hence, option C is correct.

To learn more about the Epsilon Eridani refer to link;

https://brainly.com/question/5340500

#SPJ2

The answer is:

True

Hope this Helps

Please mark my nswer as brainliest?

Answer:

Digested food is a source of potential energy

Explanation:

Answer:

It's D

Explanation:

I have the answer key

Answer:The kinetic energy of the water molecules decreases. ... The motion of the particles in the substance decreases, and the temperature of the substance increases.

Explanation:

Answer:

The molecules in the thermometer’s liquid spread apart.

Explanation:

Answer:

They move farther apart

Explanation:

When objects heat up they expand for example heating up a balloon makes it expand

Answer:

C. Supervising the game to make sure teams are playing fairly

Answer:

The answer is C

Explanation:

Answer:[tex]32.77\ mi/hr[/tex]

Explanation:

Given

Initially Reading on the odometer is [tex]31,500\ miles[/tex]

Final reading on the odometer is [tex]31,713\ miles[/tex]

Time taken is [tex]t=6.5\ hr[/tex]

average velocity [tex]=\dfrac{\text{Displacement}}{\text{time}}[/tex]

[tex]v_{avg}=\dfrac{31713-31500}{6.5}[/tex]

[tex]v_{avg}=\dfrac{213}{6.5}[/tex]

[tex]v_{avg}=32.77\ mi/hr[/tex]

Thus the average velocity of mail truck is [tex]32.77\ mi/hr[/tex]

An object moving with constant acceleration will display a nonlinear relationship on a position-time graph due to the consistent change in velocity.

For an object moving at a constant acceleration, the position-time graph would have a nonlinear shape. This is due to the fact that constant acceleration implies a constant rate of change in velocity, which in turn means that the object's speed is increasing or decreasing consistently over time. On a position-time graph, this is represented by a curve, rather than a straight line, demonstrating a nonlinear relationship between time and position. For instance, the graph might show a parabolic curve if the object is speeding up, or a hyperbolic curve if it is slowing down.

https://brainly.com/question/33267542

#SPJ3

Answer: C. Meyer did not leave gaps while Mendeleev did.

Explanation: Mendeleev's table was table different from Meyer's table because Meyer did not leave gaps while Mendeleev did.

Answer:

Explanation:

A two-track correctional system separates non-violent and violent offenders, providing distinct rehabilitation and incarceration methods for each.

A two-track correctional system provides different types of rehabilitation and incarceration for different groups. For non-violent offenders, the focus is on rehabilitation, education, and community service. On the other hand, violent offenders might face more stringent penalties and longer incarcerations.

Effectiveness in the US

Whether such a system would work better in our country is a matter of debate. Currently, the US criminal justice system faces significant challenges, including high recidivism rates, racial and ethnic disparities, and varying treatment based on social class. Implementing a two-track system may help in better addressing the roots of criminal behavior, especially for non-violent offenders who may benefit more from rehabilitative services than from traditional incarceration.

Reducing Recidivism

In theory, a two-track system could reduce the percentage of offenders reentering the system. Providing specific rehabilitation and education programs for non-violent offenders can address underlying issues such as addiction, lack of job skills, or mental health problems. These programs have been shown to lower recidivism rates by preparing individuals for successful reentry into society.

Answer:

chemical potiential energy

Answer:

A: Gravitational potential energy

Explanation:

Plants use the energy of the sun to transform it to food which is energy that is stored and is used to "work"

Answer: A) Destructive Interference

Explanation: Wave Interference can be simply defined as a phenomenon that result into creating a higher amplitude, lower amplitude or thesame amplitude of wave as two or more waves superpose.

Destructive Interference is when two waves with opposite or different amplitude but equal frequency cancel the effect of each other out as they superpose.

The active noise cancelling headphones produces an inverted wave to cancel out the noises it picks from it's surrounding, this process is called Destructive Interference.

Answer:

waxing gibbous moon so in this case gibbous

Explanation:

Answer/Explanation:

Mercury

1) What is the orbit of the Mercury?

The shape of the orbit is oval

2) Is the Sun at the center of the Earth’s orbit?

No

3) Describe the motion of the Earth throughout its orbit?

Starts fast then gets slower then begins to speed up again

4) Does it move at constant speed?

No

Earth

1) What is the orbit of the Earth?

The shape of the orbit is circular

2) Is the Sun at the center of the Earth’s orbit?

Yes

3) Describe the motion of the Earth throughout its orbit?

Travels at a steady consistent speed.

4) Does it move at constant speed?

Yes

Mars

1) What is the orbit of the Mars?

The shape of the orbit is circular

2) Is the Sun at the center of the Earth’s orbit?

Yes

3) Describe the motion of the Earth throughout its orbit?

Travels at a steady consistent speed.

​4) Does it move at constant speed?

Yes

Saturn

1) What is the orbit of the Saturn?

The shape of the orbit is circular

2) Is the Sun at the center of the Earth’s orbit?

Yes

3) Describe the motion of the Earth throughout its orbit?

Travels at a steady consistent speed.

​4) Does it move at constant speed?

Yes

Neptune

1) What is the orbit of the Neptune?

The shape of the orbit is circular

2) Is the Sun at the center of the Earth’s orbit?

Yes

3) Describe the motion of the Earth throughout its orbit?

Travels at a steady consistent speed.

4) Does it move at constant speed?

Yes

Comet

1) What is the orbit of the Comet?

The shape of the orbit is oval

2) Is the Sun at the center of the Earth’s orbit?

No

3) Describe the motion of the Earth throughout its orbit?

starts slow and gets faster and faster

4) Does it move at constant speed?

No

The orbits of Mercury, Earth, Mars, Saturn, Neptune, and comets around the Sun are elliptical, with the Sun at one of the two foci. Their motion is not at a constant speed but is faster when they are closer to the Sun in accordance with Kepler's laws of planetary motion.

The orbits of the planets and comet in our solar system, including Mercury, Earth, Mars, Saturn, Neptune, and comets are all elliptical, not circular. This is according to Kepler's First Law of Planetary Motion. The Sun is not at the center of these orbits but at one of the two foci of the ellipse.

The motion they follow around the Sun, known as orbital motion, is not at a constant speed. This is according to Kepler's Second Law, which states that a line joining a planet and the Sun sweeps out equal areas in equal intervals of time. This means when the planet is closer to the Sun in its orbit, it moves faster. And when it's farther from the Sun, it moves slower.

The same applies to a comet. A comet's orbit can be highly elliptical, and it moves fastest when it is closest to the Sun (the perihelion).

https://brainly.com/question/13663166

#SPJ11

Answer:

Explanation: Does the object move when it is released from rest?

Is the object part of a system?

Potential energy can be described as 3 characteristics that a specific object has:

The shape of an object,

The position of an object, and

Its readiness to transform into Kinetic energy.

She should ask the following to help her determine if an object has

potential energy

Does the object move when it is released from rest?

Is the object part of a system?

The student should ask if work was done to lift the object and if a force acts on it, as these help determine the potential energy.

To determine if an object has potential energy, the student should ask the following questions:

The questions regarding kinetic energy and movement upon release are less directly related to potential energy, as they address the object's kinetic energy status instead. The consideration of a system may be relevant depending on context, but identifying potential energy primarily focuses on the object's position and forces acting upon it.

Answer:

Vocal Cords

Explanation:

Air passes through the vocal cords causing them to vibrate.

Answer:

the vocal cords

Explanation:

1. False, the relationship between mass and inertia is actually described by Newton's 1st law in which an object will remain still without the tendency to change unless a force is placed upon it.

2. True, Newton did determine a direct relationship between force and mass because the greater the mass, the more force is required.

3. True, any change in velocity is called acceleration, for example, there is deacceleration, zero acceleration, or normal acceleration.

4. True, the greater the force applied to an object, the greater it will accelerate but it also does depend on the mass of an object.

5. False, if the mass of an object is increased, then the given net force will not help it to accelerate.

6. False, a net force of 1N applied to a mass of 1kg does not result in acceleration of 0.5m/s^2 because the net force of a 0.5m/s^2 acceleration is 0.5N.

7. True, the weight of your body does equal mass times gravitational acceleration on earth which is 9.8m/s^2.

8. False, the weight of the 10kg object is heavier than the 5kg object resulting in a slower acceleration.

9. False, the real way to find acceleration is change in velocity over time taken.

10.  False, the acceleration of an object depends on the object's weight.

Answer:

The correct option is (b) i.e. 0.03 m.

Explanation:

We have,

Speed of a wave is 0.09 m/s and the frequency of a wave is 3 Hz.

It is required to find the wavelength of a wave.

The speed of a wave in terms of wavelength and frequency is given by :

[tex]v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{0.09}{3} \\\\\lambda=0.03\ m[/tex]

So, the wavelength of a wave is 0.03 m.

Answer: Its B on Edge

Explanation: Trust

Answer:

1.f   2.c   3.d   4.e   5.d   6.a

Explanation:

The third sentence is the inertial law itself. Concentrate in understanding that, and you will understand everything. For example, planets move for billion years because there is no friction in space, which help to understand the second sentence. Mass and inertia is practically the same thing. That's what explain why heavy objects are harder to change its motion. But, if an object has an unbalanced force, the net force is not zero, and if there is no friction, the object will change its motion.

Answer:

5 L

Explanation:

Ideal gas law:

PV = nRT

If P, n, and R are constant, then:

n₁R/P₁ = n₂R/P₂

Using ideal gas law, we can rewrite this as:

V₁/T₁ = V₂/T₂

This is known as Charles' law.

Plugging in values:

10 L / 546 K = V / 273 K

V = 5 L

Answer: 4.51 L

Explanation:

Final answer:

The correct answer is C. Arrows point away from north and toward south.

Explanation:

The correct answer would be option C. Arrows point away from north and toward south. In a bar magnet, the magnetic field lines are defined to have the direction that a small compass points when placed at a location. If we use small compasses to map the magnetic field around a bar magnet, they will point away from the north pole of the magnet and toward the south pole of the magnet. So, the magnetic field lines would point away from the north pole and towards the south pole of a bar magnet.

Answer:

.

Explanation:

The increase in the length of the 39 m steel railroad track when the temperature rises from 8°C to 37°C is approximately 0.492 inch, calculated using the linear thermal expansion formula ΔL = αLΔT.

The question asks for the increase in the length of a steel railroad track when the temperature rises from 8°C to 37°C. To find the increase in length, we can use the formula for linear thermal expansion: ΔL = αLΔT, where ΔL is the change in length, α is the coefficient of linear expansion, L is the original length, and ΔT is the change in temperature.

Given:

Using the formula:

ΔL = αLΔT
ΔL = (11 x 10-6 °C⁻¹)(39 m)(29°C)
ΔL = 0.012507 m

To convert ΔL to inches, we use the conversion factor 1 inch = 0.0254 m:

ΔL = 0.012507 m / 0.0254 m/inch
ΔL ≈ 0.492 inch

Therefore, the increase in the length of the steel rail on a hot day when the temperature is 37°C is approximately 0.492 inch.